:root{
  --blue:#1f6fe5; --blue-d:#1558bf; --bg:#f2f4f8; --card:#fff;
  --text:#1c2430; --muted:#8a94a6; --line:#e6e9f0; --input:#fff;
  --red:#e5484d; --orange:#f79009; --green:#12b76a;
  --chip:#eef2f8; --shadow:rgba(20,40,80,.06);
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-t:env(safe-area-inset-top,0px);
  --bb-h:64px;   /* chiều cao thật của thanh tab dưới — JS đo và ghi đè */
  --qa-h:64px;   /* chiều cao thật của ô thêm việc — JS đo và ghi đè */
  --tb-h:60px;   /* chiều cao thật của thanh tiêu đề — JS đo và ghi đè */
}
:root[data-theme=dark]{
  --bg:#000000; --card:#15181f; --text:#e8ecf4; --muted:#8b93a5;
  --line:#262b36; --input:#0d1016; --chip:#222835; --shadow:rgba(0,0,0,.5);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;height:100dvh}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--text);font-size:16px;
  overscroll-behavior-y:none;   /* hết bật nảy làm giao diện xê dịch */
  -webkit-text-size-adjust:100%}
main{-webkit-overflow-scrolling:touch}
.hidden{display:none!important}
button{font-family:inherit;border:0;background:none;cursor:pointer;font-size:15px;color:var(--text)}
input,select,textarea{font-family:inherit;font-size:16px;border:1px solid var(--line);
  border-radius:10px;padding:9px 12px;background:var(--input);color:var(--text);outline:none}
input:focus,textarea:focus{border-color:var(--blue)}
::placeholder{color:var(--muted)}

/* ---------- login ---------- */
.login{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,#1f6fe5 0%,#12429c 100%);z-index:50}
.login-box{background:var(--card);border-radius:20px;padding:34px 28px;width:min(330px,88vw);
  display:flex;flex-direction:column;gap:14px;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.login-icon{width:64px;height:64px;border-radius:16px;margin:0 auto}
.login-box h1{font-size:20px}
.login-err{color:var(--red);font-size:14px;min-height:18px}

/* ---------- topbar ---------- */
.topbar{position:sticky;top:0;z-index:10;background:var(--bg);
  display:flex;align-items:center;gap:4px;
  padding:calc(12px + var(--safe-t)) 10px 8px}
#topbar-title{font-size:20px;font-weight:800;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-btn{font-size:19px;color:var(--muted);padding:6px 9px;min-width:44px;min-height:44px;
  display:inline-flex;align-items:center;justify-content:center}
.more-menu{position:fixed;top:calc(52px + var(--safe-t));right:10px;z-index:25;background:var(--card);
  border:1px solid var(--line);border-radius:14px;padding:6px;min-width:190px;
  box-shadow:0 12px 40px var(--shadow)}
.more-menu button{display:block;width:100%;text-align:left;padding:9px 12px;border-radius:9px;font-size:14.5px}
.more-menu button:active,.more-menu button.on{background:var(--chip)}
.mm-label{font-size:11.5px;color:var(--muted);font-weight:700;padding:8px 12px 2px;text-transform:uppercase}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(10,20,40,.45);z-index:28}
.drawer{position:fixed;top:0;bottom:0;left:0;width:min(300px,82vw);z-index:29;background:var(--card);
  transform:translateX(-105%);transition:transform .22s ease;display:flex;flex-direction:column;
  box-shadow:8px 0 40px var(--shadow)}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;gap:12px;align-items:center;
  padding:calc(20px + var(--safe-t)) 18px 14px;border-bottom:1px solid var(--line)}
.drawer-head img{width:44px;height:44px;border-radius:12px}
.drawer-head small{display:block;color:var(--muted);font-size:12.5px}
.drawer-scroll{flex:1;overflow-y:auto;padding:10px 10px calc(16px + var(--safe-b))}
.dr-item{display:flex;align-items:center;gap:11px;width:100%;padding:10px 12px;border-radius:11px;
  font-size:15px;text-align:left}
.dr-item.on{background:var(--chip);font-weight:700;color:var(--blue)}
.dr-item .ico{width:22px;text-align:center}
.dr-item .cnt{margin-left:auto;color:var(--muted);font-size:13px}
.dr-item .dot{width:10px;height:10px;border-radius:50%}
.dr-label{display:flex;justify-content:space-between;align-items:center;font-size:11.5px;
  color:var(--muted);font-weight:700;padding:14px 12px 4px;letter-spacing:.5px}
.dr-label button{font-size:16px;color:var(--muted)}
.dr-tags{display:flex;flex-wrap:wrap;gap:6px;padding:4px 10px}
.dr-tag{background:var(--chip);border-radius:16px;padding:5px 12px;font-size:13px}
.dr-tag.on{background:var(--blue);color:#fff}
.dr-bottom{border-top:1px solid var(--line);margin-top:12px;padding-top:8px}

/* ---------- layout ---------- */
/* chừa chỗ đúng bằng: ô thêm việc + thanh tab (JS đo thật) */
main{padding:4px 14px;padding-bottom:calc(var(--qa-h) + var(--bb-h) + 28px)}

.bottombar{position:fixed;left:0;right:0;bottom:0;z-index:22;background:var(--card);
  border-top:1px solid var(--line);display:flex;align-items:stretch;
  padding:2px 2px calc(2px + var(--safe-b));
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.nav-btn{flex:1 1 0;min-width:0;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:3px;color:var(--muted);font-size:10px;line-height:1;
  padding:8px 1px;min-height:52px;border-radius:12px;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis}
.nav-btn span{font-size:21px;line-height:1;filter:grayscale(1);opacity:.55}
.nav-btn:active{background:var(--chip)}
.nav-btn.active{color:var(--blue);font-weight:700}
.nav-btn.active span{filter:none;opacity:1}

/* ---------- quick add ---------- */
.quickadd{position:fixed;left:10px;right:10px;bottom:calc(var(--bb-h) + 10px);z-index:21;
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:8px;box-shadow:0 8px 30px var(--shadow)}
.qa-row{display:flex;gap:4px;align-items:center}
#qa-input{flex:1;min-width:0;border:0;padding:6px 4px;font-size:15.5px;background:transparent}
.qa-tool{font-size:19px;padding:4px;border-radius:10px;opacity:.55;
  min-width:44px;min-height:44px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center}
.qa-tool.on{opacity:1;background:var(--chip)}
.qa-tool.p1{color:var(--blue)}.qa-tool.p2{color:var(--orange)}.qa-tool.p3{color:var(--red)}
.qa-send{background:var(--blue);color:#fff;border-radius:14px;flex:0 0 auto;
  width:56px;height:48px;font-size:21px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center}
.qa-send:active{background:var(--blue-d);transform:scale(.95)}
.qa-chips{display:flex;flex-wrap:wrap;gap:6px;padding:2px 6px 8px}
.qa-chip{background:var(--chip);color:var(--blue);border-radius:14px;padding:4px 11px;
  font-size:12.5px;font-weight:600;display:flex;align-items:center;gap:5px}
.qa-chip .x{color:var(--muted);font-size:14px}
.qa-menu{position:absolute;bottom:100%;right:0;margin-bottom:8px;background:var(--card);
  border:1px solid var(--line);border-radius:14px;padding:6px;min-width:160px;
  box-shadow:0 12px 40px var(--shadow)}
.qa-menu button{display:block;width:100%;text-align:left;padding:9px 12px;border-radius:9px;font-size:14.5px}
.qa-menu button:active{background:var(--chip)}

/* ---------- sections & tasks ---------- */
.section-h{margin:16px 4px 8px;font-size:13px;font-weight:700;color:var(--muted);
  text-transform:uppercase;letter-spacing:.4px;display:flex;justify-content:space-between;align-items:center}
.section-h.overdue{color:var(--red)}
.postpone{color:var(--blue);font-size:13px;font-weight:600;text-transform:none}
.task{position:relative;border-radius:14px;margin-bottom:8px;overflow:hidden;
  background:var(--card);box-shadow:0 1px 3px var(--shadow)}
.tk-under{position:absolute;inset:0;display:flex;justify-content:space-between;align-items:stretch}
.tk-under .u-done{flex:1;background:var(--green);color:#fff;display:flex;align-items:center;
  padding-left:18px;font-size:20px;opacity:0}
.tk-under .u-acts{display:flex;opacity:0}
.tk-under button{width:60px;color:#fff;font-size:17px}
.tk-under .u-date{background:var(--orange)}
.tk-under .u-del{background:var(--red)}
.task.sw-right .u-done{opacity:1}
.task.sw-left .u-acts,.task.sw-open .u-acts{opacity:1}
.tk-swipe{position:relative;display:flex;align-items:flex-start;gap:12px;background:var(--card);
  padding:12px 14px;transition:transform .18s ease}
.task .chk{width:22px;height:22px;min-width:22px;border:2px solid var(--muted);
  border-radius:50%;margin-top:1px;position:relative}
/* nới vùng chạm ô tick lên ~44px mà không đổi hình (lệch trái, chừa bên phải cho mở chi tiết) */
.task .chk::after{content:"";position:absolute;inset:-11px -8px -11px -14px}
.task .chk.p1{border-color:var(--blue)}
.task .chk.p2{border-color:var(--orange)}
.task .chk.p3{border-color:var(--red)}
.task.done-anim{opacity:.35;transition:opacity .35s}
.task .body{flex:1;min-width:0}
.task .t-title{font-size:15.5px;line-height:1.35;word-break:break-word}
.task .t-meta{font-size:12.5px;color:var(--muted);margin-top:3px;display:flex;
  flex-wrap:wrap;gap:7px;align-items:center}
.task .t-meta .late{color:var(--red);font-weight:700}
.t-tag{background:var(--chip);border-radius:10px;padding:1px 8px;font-size:11.5px}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.day-empty{color:var(--muted);opacity:.45;font-size:12.5px;text-align:center;
  padding:6px 0 10px}
.empty{color:var(--muted);text-align:center;padding:44px 20px;font-size:15px}
.empty b{font-size:34px;display:block;margin-bottom:8px}

/* done + trash */
.done-item{display:flex;gap:10px;align-items:center;background:var(--card);
  border-radius:12px;padding:10px 14px;margin-bottom:6px;color:var(--muted)}
.done-item .tt{flex:1;text-decoration:line-through;word-break:break-word}
.done-item .tt.no-line{text-decoration:none}
.done-item button{font-size:13.5px;color:var(--blue);font-weight:600}
.done-count{background:var(--chip);color:var(--blue);border-radius:12px;padding:10px 14px;
  font-weight:700;margin:8px 0 14px;text-align:center}
.trash-actions{display:flex;justify-content:flex-end;margin:8px 0}
.trash-actions button{color:var(--red);font-weight:600;font-size:14px}

/* lists manage */
.list-card{display:flex;align-items:center;gap:12px;background:var(--card);
  border-radius:14px;padding:15px;margin-bottom:8px;box-shadow:0 1px 3px var(--shadow)}
.list-card .ln{flex:1;font-weight:600}
.list-card .cnt{color:var(--muted);font-size:14px}
.add-list-btn{width:100%;padding:13px;border:2px dashed var(--line);border-radius:14px;
  color:var(--muted);font-weight:600;margin-top:4px}
.back-btn{color:var(--blue);font-weight:700;font-size:15px;margin:6px 4px;display:inline-block}

/* ---------- calendar ---------- */
.cal-head{display:flex;align-items:center;justify-content:space-between;margin:8px 2px}
.cal-head b{font-size:17px}
.cal-head .cal-nav{display:flex;gap:4px}
.cal-head button{font-size:16px;padding:6px 12px;border-radius:9px;background:var(--chip)}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:3px;margin-bottom:12px}
.cal-wd{text-align:center;font-size:11px;color:var(--muted);font-weight:700;padding:4px 0}
.cal-cell{aspect-ratio:1;border-radius:10px;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:2px;font-size:13.5px;background:var(--card);position:relative}
.cal-cell.dim{opacity:.32}
.cal-cell.today{outline:2px solid var(--blue);font-weight:800;color:var(--blue)}
.cal-cell.sel{background:var(--blue);color:#fff}
.cal-dots{display:flex;gap:2px;height:5px}
.cal-dots i{width:5px;height:5px;border-radius:50%;background:var(--muted)}
.cal-dots i.p3{background:var(--red)}.cal-dots i.p2{background:var(--orange)}.cal-dots i.p1{background:var(--blue)}
.cal-cell.sel .cal-dots i{background:#fff}

/* ---------- matrix ---------- */
/* 4 ô chia tư đúng khung nhìn — mỗi ô cuộn riêng khi nhiều việc */
.mx-grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:8px;
  height:calc(100dvh - var(--tb-h) - var(--qa-h) - var(--bb-h) - 52px)}
.mx-cell{background:var(--card);border-radius:14px;padding:10px 9px;min-height:0;
  overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;
  box-shadow:0 1px 3px var(--shadow)}
.mx-head{position:sticky;top:-10px;background:var(--card);padding:2px 0 7px;z-index:1;margin-bottom:4px}
.mx-sub{font-size:10.5px;color:var(--muted);line-height:1.25;margin-top:2px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
/* ma trận: khung chia tư đã tự tính chiều cao -> main không cần chừa thêm, không cuộn */
body[data-view="matrix"] main{overflow:hidden;padding-bottom:6px}
.mx-cell h4{font-size:13px;display:flex;align-items:center;gap:5px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.3}
.mx-cell h4 .n{color:var(--muted);font-weight:600;margin-left:auto}
.mx-task{font-size:13px;padding:7px 9px;border-radius:8px;background:var(--chip);
  margin-bottom:5px;word-break:break-word;line-height:1.3}
.mx-task small{color:var(--muted)}
.mx-more{font-size:12px;color:var(--muted);text-align:center;padding:3px 0}
.mx-empty{font-size:12px;color:var(--muted);text-align:center;padding:10px 0;opacity:.6}

/* ---------- pomodoro ---------- */
.pomo-wrap{display:flex;flex-direction:column;align-items:center;padding-top:16px;gap:18px}
.pomo-ring{position:relative;width:240px;height:240px}
.pomo-ring svg{transform:rotate(-90deg)}
.pomo-ring .bgc{stroke:var(--line);fill:none}
.pomo-ring .fgc{stroke:var(--blue);fill:none;stroke-linecap:round;transition:stroke-dashoffset .5s linear}
.pomo-ring.break .fgc{stroke:var(--green)}
.pomo-mid{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.pomo-time{font-size:46px;font-weight:800;font-variant-numeric:tabular-nums}
.pomo-mode{font-size:13px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:1px}
.pomo-task-sel{width:min(320px,86vw)}
.pomo-sound-row{display:flex;gap:8px;width:min(320px,86vw)}
.pomo-sound-row select{flex:1;min-width:0}
.pomo-try{background:var(--chip);border-radius:10px;padding:9px 12px;font-size:13.5px;
  font-weight:600;white-space:nowrap;min-height:44px}
.pomo-try:active{background:var(--blue);color:#fff}
.pomo-btns{display:flex;gap:12px}
.pomo-btns .big{background:var(--blue);color:#fff;border-radius:16px;padding:14px 44px;
  font-size:16px;font-weight:700}
.pomo-btns .big.stop{background:var(--red)}
.pomo-btns .ghost{background:var(--chip);border-radius:16px;padding:14px 20px}
.pomo-today{color:var(--muted);font-size:14px}

/* ---------- habits ---------- */
.hb-card{background:var(--card);border-radius:14px;padding:14px;margin-bottom:10px;
  box-shadow:0 1px 3px var(--shadow)}
.hb-top{display:flex;align-items:center;gap:10px}
.hb-top .ic{font-size:24px}
.hb-top .nm{flex:1;font-weight:600}
.hb-top .stk{font-size:13px;color:var(--orange);font-weight:700}
.hb-week{display:flex;justify-content:space-between;margin-top:11px}
.hb-day{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:10.5px;color:var(--muted)}
.hb-day .c{width:32px;height:32px;border-radius:50%;border:2px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:14px;color:transparent}
.hb-day .c.ck{background:var(--green);border-color:var(--green);color:#fff}
.hb-day.today .c{border-color:var(--blue)}
.hb-icons{display:flex;flex-wrap:wrap;gap:8px;flex:1}
.hb-icons button{font-size:22px;padding:6px;border-radius:10px}
.hb-icons button.on{background:var(--chip);outline:2px solid var(--blue)}

/* ---------- stats ---------- */
.st-cards{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px}
.st-card{background:var(--card);border-radius:14px;padding:14px;box-shadow:0 1px 3px var(--shadow)}
.st-card b{font-size:24px;display:block}
.st-card small{color:var(--muted);font-size:12.5px}
.st-chart{background:var(--card);border-radius:14px;padding:14px;margin-bottom:14px;box-shadow:0 1px 3px var(--shadow)}
.st-chart h4{font-size:14px;margin-bottom:12px}
.st-bars{display:flex;align-items:flex-end;gap:4px;height:110px}
.st-bar{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;height:100%;justify-content:flex-end}
.st-bar i{width:100%;background:var(--blue);border-radius:4px 4px 0 0;min-height:2px}
.st-bar small{font-size:9px;color:var(--muted)}
.st-bar b{font-size:10px}
.st-row{display:flex;align-items:center;gap:10px;padding:7px 0;border-bottom:1px solid var(--line);font-size:14px}
.st-row:last-child{border:0}
.st-row .n{margin-left:auto;font-weight:700}

/* ---------- search ---------- */
.search-ov{position:fixed;inset:0;z-index:35;background:var(--bg);display:flex;flex-direction:column}
.search-bar{display:flex;gap:6px;align-items:center;
  padding:calc(12px + var(--safe-t)) 12px 8px}
.search-bar input{flex:1}
.search-bar .icon-btn{font-size:26px}
.search-results{flex:1;overflow-y:auto;padding:4px 14px 30px}

/* ---------- sheet ---------- */
.sheet-mask{position:fixed;inset:0;background:rgba(10,20,40,.45);z-index:30}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:31;background:var(--card);
  border-radius:22px 22px 0 0;padding:10px 18px calc(18px + var(--safe-b));
  max-height:88vh;max-height:88dvh;overflow-y:auto;overscroll-behavior:contain;
  box-shadow:0 -10px 40px rgba(0,0,0,.25)}
.sheet-grip{width:44px;height:5px;border-radius:3px;background:var(--line);margin:4px auto 12px}
.dt-title{width:100%;font-size:18px;font-weight:700;border:0;border-bottom:2px solid var(--line);
  border-radius:0;padding:8px 2px;margin-bottom:10px;background:transparent}
.dt-row{display:flex;align-items:center;gap:10px;margin:10px 0;flex-wrap:wrap}
.dt-row label{font-size:14px;color:var(--muted);min-width:78px}
.dt-row select{flex:1;min-width:120px}
.chips button{background:var(--chip);border-radius:20px;padding:7px 14px;font-size:13.5px;font-weight:600}
.prio-btns{display:flex;gap:6px;flex:1}
.prio-btns button{flex:1;min-width:0;border:1.5px solid var(--line);border-radius:10px;
  padding:8px 2px;font-weight:600;font-size:12px;white-space:nowrap}
.prio-btns .p3.on{background:rgba(229,72,77,.12);border-color:var(--red);color:var(--red)}
.prio-btns .p2.on{background:rgba(247,144,9,.12);border-color:var(--orange);color:var(--orange)}
.prio-btns .p1.on{background:rgba(31,111,229,.12);border-color:var(--blue);color:var(--blue)}
.prio-btns .p0.on{background:var(--chip);border-color:var(--muted);color:var(--muted)}
#dt-note{width:100%;margin-top:6px;resize:none}
.hint{font-size:12.5px;color:var(--muted)}
.sub-progress{height:5px;background:var(--line);border-radius:3px;margin-top:12px;overflow:hidden}
.sub-progress div{height:100%;background:var(--green);border-radius:3px;transition:width .25s}
.subtasks{margin-top:8px}
.sub-item{display:flex;align-items:center;gap:10px;padding:7px 2px;border-bottom:1px solid var(--line)}
.sub-item input[type=checkbox]{width:18px;height:18px}
.sub-item .st{flex:1;font-size:14.5px}
.sub-item .st.d{text-decoration:line-through;color:var(--muted)}
.sub-item .sx{color:var(--muted);font-size:17px;padding:0 6px}
.sub-add input{width:100%;margin-top:8px;border-style:dashed}
.sheet-actions{display:flex;gap:10px;margin-top:16px}
.btn-primary{flex:1;background:var(--blue);color:#fff;border-radius:12px;padding:13px;font-weight:700;font-size:15.5px}
.btn-primary:active{background:var(--blue-d)}
.btn-danger{background:rgba(229,72,77,.12);color:var(--red);border-radius:12px;padding:13px 18px;font-weight:700}
.btn-flat{background:var(--chip);border-radius:12px;padding:13px 18px;font-weight:700}
.sheet h3{margin:4px 0 12px}
.sheet hr{border:0;border-top:1px solid var(--line);margin:16px 0}

/* toast */
.toast{position:fixed;left:50%;transform:translateX(-50%);
  bottom:calc(var(--bb-h) + var(--qa-h) + 22px);
  background:#243041;color:#fff;padding:11px 18px;border-radius:14px;font-size:14px;
  z-index:40;max-width:86vw;box-shadow:0 8px 24px rgba(0,0,0,.3);
  display:flex;align-items:center;gap:12px}
:root[data-theme=dark] .toast{background:#334261}
.toast-undo{color:#7db4ff;font-weight:800;font-size:14px;white-space:nowrap}

/* hoàn thành: gạch ngang mờ dần */
.task.done-strike .tk-swipe{opacity:.4;transition:opacity .55s}
.task.done-strike .chk{background:var(--green);border-color:var(--green)}

/* kéo thả thứ tự */
.task.dragging{z-index:15;box-shadow:0 10px 30px rgba(0,0,0,.25);opacity:.92}
.task.dragging .tk-swipe{background:var(--chip)}

/* việc mới thêm nháy sáng để thấy ngay */
@keyframes flashNew{0%{background:rgba(31,111,229,.35)}100%{background:transparent}}
.task.flash .tk-swipe{animation:flashNew 1.4s ease-out}

/* ma trận kéo thả kanban */
/* touch-action:none để iOS không nuốt cử chỉ; việc cuộn trong ô do JS tự lo */
.mx-task{cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none;
  transition:transform .12s, box-shadow .12s}
.mx-task.mx-dragging{cursor:grabbing;transition:none;transform-origin:center;
  box-shadow:0 14px 34px rgba(0,0,0,.55);background:var(--blue);color:#fff;
  border-radius:8px;padding:7px 9px;font-size:13px;line-height:1.3}
.mx-task.mx-dragging small{color:rgba(255,255,255,.75)}
.mx-task.mx-src{opacity:.3}
.mx-cell.mx-over{outline:2px solid var(--blue);outline-offset:-2px;
  background:color-mix(in srgb, var(--blue) 12%, var(--card))}

/* ---------- DESKTOP (>=900px): sidebar cố định, bỏ tab dưới ---------- */
@media (min-width:900px){
  .drawer{transform:none;box-shadow:none;border-right:1px solid var(--line)}
  .drawer-mask{display:none!important}
  #btn-drawer{display:none}
  .topbar{margin-left:300px;padding-left:24px}
  main{margin-left:300px;max-width:780px;padding-left:24px;
    padding-bottom:calc(var(--qa-h) + 60px)}
  .bottombar{display:none}
  .quickadd{left:324px;right:auto;width:min(736px,calc(100vw - 348px));bottom:24px}
  .toast{left:calc(300px + (100vw - 300px)/2);bottom:calc(var(--qa-h) + 44px)}
  .sheet{left:50%;right:auto;transform:translateX(-50%);width:min(560px,96vw);
    border-radius:22px;bottom:24px}
  .task .body:hover .t-title{color:var(--blue)}
}
.hb-heat{font-size:15px;color:var(--muted);padding:2px 8px}
.hb-heatmap{display:grid;grid-template-columns:repeat(14,1fr);gap:3px;margin-top:12px}
.hb-heatmap i{aspect-ratio:1;border-radius:3px;background:var(--line)}
.hb-heatmap i.on{background:var(--green)}

/* ---------- vá khi chuyển sang Cloudflare (14/11/2026) — giữ y hình cũ, chỉ sửa chỗ vỡ / khó bấm ---------- */
/* ô ngày/giờ, ô chọn, ô tick, thanh cuộn theo đúng nền sáng/tối (nền tối hết icon lịch đen trên nền đen) */
:root{color-scheme:light}
:root[data-theme=dark]{color-scheme:dark}
input[type=checkbox]{accent-color:var(--blue)}
/* nút đang khoá phải trông khác nút bấm được (vd «Bật nhắc» trên iPhone chưa cài app) */
button:disabled{opacity:.45;cursor:not-allowed}
/* ô thêm việc 16px: iPhone không tự phóng to màn khi gõ */
#qa-input{font-size:16px;min-height:44px}
/* nới vùng chạm ≥44px, hình giữ nguyên (đệm + lề âm) */
.postpone{padding:14px 4px;margin:-14px -4px}
input:not([type=checkbox]),select{min-height:44px}
.hb-day .c{position:relative;cursor:pointer}
.hb-day .c::after{content:"";position:absolute;inset:-8px}
.dr-label button{min-width:44px;min-height:44px;margin:-12px -12px -12px 0;
  display:inline-flex;align-items:center;justify-content:center}
.dr-item{min-height:44px}
.more-menu button,.qa-menu button{min-height:44px}
.prio-btns button{min-height:44px}
.chips button{position:relative}
.chips button::after{content:"";position:absolute;inset:-6px 0}
#dt-remind{width:22px;height:22px}
.sub-item input[type=checkbox]{width:22px;height:22px}
.sub-item .sx{padding:12px;margin:-12px -6px}
.done-item button{padding:12px 8px;margin:-12px -4px}
.trash-actions button{padding:12px 4px}
.back-btn{padding:10px 4px;margin:-4px 0}
.cal-head button{min-width:44px;min-height:44px}
.hb-heat{min-width:44px;min-height:44px}
.hb-icons button{min-width:44px;min-height:44px}
/* cài đặt: 2 ô mật khẩu thẳng hàng */
#settings .dt-row:has(input[type=password]) label{min-width:104px}
/* tập trung: 3 nút không gãy chữ «Bắt / đầu» trên điện thoại hẹp */
@media (max-width:420px){
  .pomo-btns{gap:8px}
  .pomo-btns button{white-space:nowrap}
  .pomo-btns .big{padding:14px 28px}
  .pomo-btns .ghost{padding:14px 14px}
}